JP2003063811A - Method for producing aluminum metaphosphate - Google Patents

Method for producing aluminum metaphosphate

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Publication number
JP2003063811A
JP2003063811A JP2001257158A JP2001257158A JP2003063811A JP 2003063811 A JP2003063811 A JP 2003063811A JP 2001257158 A JP2001257158 A JP 2001257158A JP 2001257158 A JP2001257158 A JP 2001257158A JP 2003063811 A JP2003063811 A JP 2003063811A
Authority
JP
Japan
Prior art keywords
aluminum
powder
metaphosphate
aluminum metaphosphate
purity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001257158A
Other languages
Japanese (ja)
Other versions
JP3865604B2 (en
Inventor
Hiromi Kawamoto
博美 川本
Tadashi Tanaka
正 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Glass Co Ltd
Original Assignee
Central Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central Glass Co Ltd filed Critical Central Glass Co Ltd
Priority to JP2001257158A priority Critical patent/JP3865604B2/en
Publication of JP2003063811A publication Critical patent/JP2003063811A/en
Application granted granted Critical
Publication of JP3865604B2 publication Critical patent/JP3865604B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a high purity aluminum metaphosphate useful as raw materials of optical materials e.g. amplification fibers, an optical lens and the like. SOLUTION: Aluminum metaphosphate powder is added to the raw material powder made up of a phosphate e.g. P2 O5 , NH4 H2 PO4 , H3 PO4 and the like, an aluminum salt e.g. Al2 O3 , AlCl3 .6H2 O, Al(OH)3 and the like, and an aluminum phosphate compound e.g. Al(H2 PO4 )3 , AlH2 P3 O10 and the like and then fired to be reacted.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、光学材料の原料と
して有用な高純度のメタリン酸アルミニウムの製造方法
に関するものである。 【0002】 【従来技術とその解決しようとする課題】現在、増幅用
ファイバ及び光学レンズ等にフツ燐酸塩ガラスを使用し
た研究が盛んに行われている。これらの用途には高純度
の原料が必要であり、その原料の一つであるメタリン酸
アルミニウム(Al(PO33)の高純度化が必要不可
欠となっている。 【0003】一般にメタリン酸アルミニウムは、リン酸
塩、アルミニウム塩、及びリン酸アルミニウム化合物が
使用され、これらの塩及び化合物を湿式合成或いは乾式
混合し、焼成することによって製造されている。しかし
ながら、これらの製造において、反応はいずれも縮合反
応であるため、固結が起こり、作業性が悪くまた、粉砕
などの工程が必要となり、不純物混入の原因となってい
る。このことから工業的には、固結を防止するため高温
でのスプレードライアー乾燥、焼成により製造している
が、材質的な面から高純度のものを得るのが困難な状態
であるのが現状である。 【0004】 【課題を解決するための手段】本発明者らは、 これら
従来技術の問題点に鑑み鋭意検討の結果、メタリン酸ア
ルミニウムの製造に際し、リン酸塩、アルミニウム塩及
びリン酸アルミニウム化合物の原料粉末に、メタリン酸
アルミニウム粉末を添加し、焼成反応させることによ
り、固結することなく高純度のメタリン酸アルミニウム
得ることができることを見いだし本発明に到達したもの
である。 【0005】本発明において、リン酸塩としては、P2
5、NH42PO4、H3PO4等が用いられる。また、
アルミニウム塩としては、Al23、AlCl3・6H2
O、Al(OH)3等が用いられる。さらに、リン酸ア
ルミニウム化合物としては、Al(H2PO43、Al
2310等が用いられる。 【0006】次に、添加するメタリン酸アルミニウムの
重量は、全原料とメタリン酸アルミニウムの合計重量の
30%以上が必要であり、好ましくは、50〜70%が
最適である。70%以上添加してもかまわないが、経済
的な面から過剰の添加は避けた方が好ましい。 【0007】原料の混合・添加は、粉末で加えても、ス
ラリーでも良いが、容器からの不純物の混入原因にもな
るため極力水分量は少ない方が好ましい。 【0008】また、焼成反応させる温度は、メタリン酸
アルミニウムの生成する400℃〜1000℃が好まし
い。 【0009】混合するリン酸塩とアルミニウム塩のモル
比(P/Al)は、3〜6が好ましく、モル比3以下で
は、不純物AlPO4が生成するため好ましくない。
また、モル比6以上では過剰のリン酸塩が残り、経済的
な面からも好ましくない。 【0010】 【実施例】以下、本発明を実施例により詳細に説明す
る。 【0011】実施例1 モル比(P/Al)が、3.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末2.95gとメタリン酸アルミニウム(A
l(PO33)粉末16gを取り、メノー乳鉢で充分混
合した。この混合物を高純度のアルミナルツボに入れ、
700℃(昇温速度1℃/min)で3時間焼成した。
得られた生成物は、柔らかく容易にアルミナルツボから
取り出せるものであった。また、この生成物をX線回折
で分析したところ、メタリン酸アルミニウム(Al(P
33)のA型タイプ(立方晶)のものが100%得ら
れていた。 【0012】実施例2 モル比(P/Al)が、3.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末2.95gとメタリン酸アルミニウム(A
l(PO33)粉末16gを取り、メノー乳鉢で充分混
合した。この混合物を高純度のアルミナルツボに入れ、
900℃(昇温速度1℃/min)で3時間焼成した。
得られた生成物は、柔らかく容易にアルミナルツボから
取り出せるものであった。また、この生成物をX線回折
で分析したところ、メタリン酸アルミニウム(Al(P
33)のA型タイプ(立方晶)のものが100%得ら
れていた。 【0013】実施例3 モル比(P/Al)が、6.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末1.48gとメタリン酸アルミニウム(A
l(PO33)粉末8gを取り、メノー乳鉢で充分混合
した。この混合物を高純度のアルミナルツボに入れ、7
00℃(昇温速度1℃/min)で3時間焼成した。得
られた生成物は、柔らかく容易にアルミナルツボから取
り出せるものであった。また、この生成物をX線回折で
分析したところ、メタリン酸アルミニウム(Al(PO
33)のA型タイプ(立方晶)のものが100%得られ
ていた。 【0014】実施例4 精製された第一リン酸アルミニウム(Al(H2PO4
3)粉末8gとメタリン酸アルミニウム(Al(PO3
3)粉末8gを取り、メノー乳鉢で充分混合した。この
混合物を高純度のアルミナルツボに入れ、700℃(昇
温速度1℃/min)で3時間焼成した。得られた生成
物は、柔らかく容易にアルミナルツボから取り出せるも
のであった。また、この生成物をX線回折で分析したと
ころ、メタリン酸アルミニウム(Al(PO33)のA
型タイプ(立方晶)と比較的低温で生成するB型タイプ
のものの混合物であった。 【0015】実施例5 高純度の五酸化リン(P25)粉末4.03gと高純度
の水酸化アルミニウム(Al(OH)3)粉末1.48
gとメタリン酸アルミニウム(Al(PO33)粉末8
gを取り、メノー乳鉢で充分混合した。この混合物を高
純度のアルミナルツボに入れ、700℃(昇温速度5℃
/min)で3時間焼成した。得られた生成物は、柔ら
かく容易にアルミナルツボから取り出せるものであっ
た。また、この生成物をX線回折で分析したところ、メ
タリン酸アルミニウム(Al(PO 33)のA型タイプ
(立方晶)のものであった。 【0016】比較例1 モル比(P/Al)が、3.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末2.95gを取り、メノー乳鉢で充分混合
した。この混合物を高純度のアルミナルツボに入れ、7
00℃(昇温速度1℃/min)で3時間焼成した。 【0017】得られた生成物は、固結しアルミナルツボ
から取り出すのが困難であった。一部を取り、X線回折
で分析したところ、メタリン酸アルミニウム(Al(P
33)のA型タイプ(立方晶)のものが100%得ら
れていた。 【0018】比較例2 モル比(P/Al)が、3.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末2.95gを取り、メノー乳鉢で充分混合
した。この混合物を高純度のアルミナルツボに入れ、9
00℃(昇温速度1℃/min)で3時間焼成した。 【0019】得られた生成物は、固結しアルミナルツボ
から取り出すのが困難であった。一部を取り、X線回折
で分析したところ、メタリン酸アルミニウム(Al(P
33)のA型タイプ(立方晶)のものが100%得ら
れていた。 【0020】比較例3 モル比(P/Al)が、6.0になるように精製された
リン酸二水素アンモニウム(NH42PO4)粉末1
3.05gと高純度の水酸化アルミニウム(Al(O
H)3)粉末1.48gを取り、メノー乳鉢で充分混合
した。この混合物を高純度のアルミナルツボに入れ、7
00℃(昇温速度1℃/min)で3時間焼成した。 【0021】得られた生成物は、非常に堅くアルミナル
ツボから取り出すことが困難であった。また、この一部
をX線回折で分析したところ、メタリン酸アルミニウム
(Al(PO33)のA型タイプ(立方晶)のものが1
00%得られていた。 【0022】比較例4 精製された第一リン酸アルミニウム(Al(H2PO4
3)粉末8gを取り、高純度のアルミナルツボに入れ、
700℃(昇温速度1℃/min)で3時間焼成した。
得られた生成物は、固結しアルミナルツボから取り出す
のが困難であった。一部を採取してX線回折で分析した
ところ、メタリン酸アルミニウム(Al(PO33)の
A型タイプ(立方晶)と比較的低温で生成するB型タイ
プのものの混合物であった。 【0023】比較例5 高純度の五酸化リン(P25)粉末8.06gと高純度
の水酸化アルミニウム(Al(OH)3)粉末2.95
gを取り、メノー乳鉢で充分混合した。この混合物を高
純度のアルミナルツボに入れ、700℃(昇温速度5℃
/min)で3時間焼成した。得られた生成物は、底部
が固まって、アルミナルツボから取り出し難いものであ
った。また、この生成物をX線回折で分析したところ、
メタリン酸アルミニウム(Al(PO33)のA型タイ
プ(立方晶)のものであった。 【0024】 【発明の効果】本発明の方法により、固結のない高純度
なメタリン酸アルミニウム粉末を、容易にかつ簡便に製
造できる。
DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
For producing high-purity aluminum metaphosphate useful by heating
It is about. [0002] 2. Description of the Related Art At present, for amplification
Use fluorophosphate glass for fiber and optical lens etc.
Research has been actively conducted. High purity for these applications
Raw material is required, and one of the raw materials is metaphosphoric acid
Aluminum (Al (POThree)Three) Is not required to be highly purified
Is missing. In general, aluminum metaphosphate is phosphoric acid
Salt, aluminum salt and aluminum phosphate compound
These salts and compounds are used for wet synthesis or dry synthesis.
It is manufactured by mixing and firing. However
However, in these productions, all reactions are condensation reactions.
The solidification occurs and the workability is poor.
And other processes are required, causing contamination of impurities.
You. Therefore, industrially, to prevent caking, high temperature
It is manufactured by spray dryer drying and baking
However, it is difficult to obtain a high-purity product due to its material properties
It is the present situation. [0004] Means for Solving the Problems The inventors of the present invention
As a result of intensive studies in view of the problems of the prior art, metaphosphate
In the production of luminium, phosphates, aluminum salts and
Metaphosphoric acid in the raw material powder of aluminum phosphate compound
By adding aluminum powder and performing a firing reaction
High-purity aluminum metaphosphate without consolidation
What has been found and what has reached the present invention
It is. [0005] In the present invention, the phosphate is PTwo
OFive, NHFourHTwoPOFour, HThreePOFourAre used. Also,
Aluminum salts include AlTwoOThree, AlClThree・ 6HTwo
O, Al (OH)ThreeAre used. In addition, phosphoric acid
As the luminium compound, Al (HTwoPOFour)Three, Al
HTwoPThreeOTenAre used. Next, aluminum metaphosphate to be added is
Weight is the total weight of all raw materials and aluminum metaphosphate
30% or more is required, and preferably 50 to 70%
Optimal. More than 70% may be added, but economic
It is preferable to avoid excessive addition from a practical point of view. [0007] Mixing and addition of raw materials can be carried out by adding
Rally, but may also cause contamination from the container.
Therefore, it is preferable that the water content is as small as possible. [0008] The temperature for the firing reaction is metaphosphoric acid.
400 ° C to 1000 ° C, which produces aluminum, is preferred
No. Moles of phosphate and aluminum salt to be mixed
The ratio (P / Al) is preferably 3 to 6, and the molar ratio is 3 or less.
Is the impurity AlPOFourIs not preferable because it is generated.
If the molar ratio is 6 or more, an excessive amount of phosphate remains, which is economical.
It is not preferable from the aspect. [0010] The present invention will be described below in more detail with reference to examples.
You. Embodiment 1 Purified to a molar ratio (P / Al) of 3.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three) Powder and 2.95 g of aluminum metaphosphate (A
l (POThree)Three) Take 16g of powder and mix well with Meneau mortar
I combined. Put this mixture in a high-purity alumina crucible,
Baking was performed at 700 ° C. (heating rate 1 ° C./min) for 3 hours.
The resulting product is soft and easily removed from the alumina crucible.
It could be taken out. The product was analyzed by X-ray diffraction.
Analysis showed that aluminum metaphosphate (Al (P
OThree)Three100% of A-type (cubic) type
Had been. Embodiment 2 Purified to a molar ratio (P / Al) of 3.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three) Powder and 2.95 g of aluminum metaphosphate (A
l (POThree)Three) Take 16g of powder and mix well with Meneau mortar
I combined. Put this mixture in a high-purity alumina crucible,
Firing was performed at 900 ° C. (heating rate 1 ° C./min) for 3 hours.
The resulting product is soft and easily removed from the alumina crucible.
It could be taken out. The product was analyzed by X-ray diffraction.
Analysis showed that aluminum metaphosphate (Al (P
OThree)Three100% of A-type (cubic) type
Had been. Embodiment 3 Purified to a molar ratio (P / Al) of 6.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three1.48 g of powder and aluminum metaphosphate (A
l (POThree)Three) Take 8g of powder and mix well with Meneau mortar
did. This mixture is placed in a high-purity alumina crucible,
Baking was performed at 00 ° C. (heating rate 1 ° C./min) for 3 hours. Profit
The product obtained is soft and easily removed from the alumina crucible.
It was able to start. The product was analyzed by X-ray diffraction.
Analysis showed that aluminum metaphosphate (Al (PO
Three)Three100% of the A-type (cubic) type
I was Embodiment 4 Purified aluminum monophosphate (Al (HTwoPOFour)
Three) Powder 8g and aluminum metaphosphate (Al (POThree)
Three8) 8 g of powder was taken and mixed well in a Meneau mortar. this
The mixture is placed in a high-purity alumina crucible and heated to 700 ° C.
The firing was performed at a temperature rate of 1 ° C./min) for 3 hours. The resulting generation
The material is soft and easy to remove from the alumina crucible.
It was. The product was analyzed by X-ray diffraction.
Roller, aluminum metaphosphate (Al (POThree)ThreeA)
Type (cubic) and B type produced at relatively low temperature
Was a mixture of Embodiment 5 High purity phosphorus pentoxide (PTwoOFive) 4.03g of powder and high purity
Aluminum hydroxide (Al (OH)Three1.) Powder 1.48
g and aluminum metaphosphate (Al (POThree)Three) Powder 8
g was mixed well in an agate mortar. High mixture
700 ° C (heating rate 5 ° C)
/ Min) for 3 hours. The resulting product is soft
It can be easily removed from the alumina crucible.
Was. The product was analyzed by X-ray diffraction.
Aluminum Titanate (Al (PO Three)ThreeA type)
(Cubic). Comparative Example 1 Purified to a molar ratio (P / Al) of 3.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three) Take 2.95g of powder and mix well with Meneau mortar
did. This mixture is placed in a high-purity alumina crucible,
Baking was performed at 00 ° C. (heating rate 1 ° C./min) for 3 hours. The obtained product is solidified to form an alumina crucible.
It was difficult to get out of. X-ray diffraction taking part
Analysis showed that aluminum metaphosphate (Al (P
OThree)Three100% of A-type (cubic) type
Had been. Comparative Example 2 Purified to a molar ratio (P / Al) of 3.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three) Take 2.95g of powder and mix well with Meneau mortar
did. This mixture is placed in a high-purity alumina crucible, and 9
Baking was performed at 00 ° C. (heating rate 1 ° C./min) for 3 hours. The obtained product is solidified to form an alumina crucible.
It was difficult to get out of. X-ray diffraction taking part
Analysis showed that aluminum metaphosphate (Al (P
OThree)Three100% of A-type (cubic) type
Had been. Comparative Example 3 Purified to a molar ratio (P / Al) of 6.0
Ammonium dihydrogen phosphate (NHFourHTwoPOFour) Powder 1
3.05 g of high-purity aluminum hydroxide (Al (O
H)Three) Take 1.48 g of powder and mix well with Meneau mortar
did. This mixture is placed in a high-purity alumina crucible,
Baking was performed at 00 ° C. (heating rate 1 ° C./min) for 3 hours. The product obtained is very hard
It was difficult to remove it from the point. Also part of this
Was analyzed by X-ray diffraction.
(Al (POThree)Three1) A type (cubic)
00% was obtained. Comparative Example 4 Purified aluminum monophosphate (Al (HTwoPOFour)
Three) Take 8g of powder, put in high purity alumina crucible,
Baking was performed at 700 ° C. (heating rate 1 ° C./min) for 3 hours.
The resulting product is consolidated and removed from the alumina crucible
It was difficult. A portion was collected and analyzed by X-ray diffraction
However, aluminum metaphosphate (Al (POThree)Three)of
A type (cubic) and B type tie produced at relatively low temperature
Was a mixture of Comparative Example 5 High purity phosphorus pentoxide (PTwoOFive) 8.06g powder and high purity
Aluminum hydroxide (Al (OH)Three2.) Powder 2.95
g was mixed well in an agate mortar. High mixture
700 ° C (heating rate 5 ° C)
/ Min) for 3 hours. The product obtained is at the bottom
Is hard to remove from the alumina crucible.
Was. When this product was analyzed by X-ray diffraction,
Aluminum metaphosphate (Al (POThree)ThreeA type tie
(Cubic). [0024] According to the method of the present invention, high purity without caking
Aluminum metaphosphate powder easily and easily
Can be built.

Claims (1)

【特許請求の範囲】 【請求項1】 リン酸塩とアルミニウム塩及びリン酸ア
ルミニウム化合物を原料としメタリン酸アルミニウムを
製造するに際し、該原料粉末にメタリン酸アルミニウム
粉末を混合し、焼成反応させることを特徴とするメタリ
ン酸アルミニウムの製造方法。
Claims 1. In producing aluminum metaphosphate from a phosphate, an aluminum salt and an aluminum phosphate compound as raw materials, mixing the raw material powder with the aluminum metaphosphate powder and performing a firing reaction. A method for producing aluminum metaphosphate, which is characterized in that:
JP2001257158A 2001-08-28 2001-08-28 Method for producing aluminum metaphosphate Expired - Fee Related JP3865604B2 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080893A1 (en) * 2003-03-14 2004-09-23 Nippon Chemical Industrial Co., Ltd. High purity metaphosphate and method for production thereof
CN100352762C (en) * 2004-12-31 2007-12-05 西安交通大学医学院 Calcium metaphosphorate production process
CN100355647C (en) * 2004-12-31 2007-12-19 山西超新金属材料有限公司 Lithium metaphosphorate production process
CN100384721C (en) * 2004-12-31 2008-04-30 山西超新金属材料有限公司 Barium metaphosphorate production process
JP2009067608A (en) * 2007-09-11 2009-04-02 Rin Kagaku Kogyo Kk Method for producing high-purity aluminum metaphosphate
JP2009067611A (en) * 2007-09-11 2009-04-02 Rin Kagaku Kogyo Kk Method for producing high-purity aluminum metaphosphate
CN103523765A (en) * 2012-07-04 2014-01-22 广东先导稀材股份有限公司 Preparation method of aluminum dihydrogen tripolyphosphate
CN105645369A (en) * 2016-04-08 2016-06-08 山东理工大学 Preparation method of Al(H2PO4)3 crystal powder
CN110054166A (en) * 2019-05-13 2019-07-26 承德莹科精细化工股份有限公司 A kind of preparation method of high-purity optical glass additive ytterbium metaphosphate

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JP4500234B2 (en) * 2003-03-14 2010-07-14 日本化学工業株式会社 High purity metaphosphate and method for producing the same
JP2005325023A (en) * 2003-03-14 2005-11-24 Nippon Chem Ind Co Ltd High purity metaphosphate and its production method
CN100351173C (en) * 2003-03-14 2007-11-28 日本化学工业株式会社 High purity metaphosphate and method for production thereof
WO2004080893A1 (en) * 2003-03-14 2004-09-23 Nippon Chemical Industrial Co., Ltd. High purity metaphosphate and method for production thereof
KR101093353B1 (en) * 2003-03-14 2011-12-14 니폰 가가쿠 고교 가부시키가이샤 High Purity Metaphosphate
KR101056561B1 (en) * 2003-03-14 2011-08-11 니폰 가가쿠 고교 가부시키가이샤 High Purity Metaphosphate and Method of Making the Same
CN100352762C (en) * 2004-12-31 2007-12-05 西安交通大学医学院 Calcium metaphosphorate production process
CN100384721C (en) * 2004-12-31 2008-04-30 山西超新金属材料有限公司 Barium metaphosphorate production process
CN100355647C (en) * 2004-12-31 2007-12-19 山西超新金属材料有限公司 Lithium metaphosphorate production process
JP2009067611A (en) * 2007-09-11 2009-04-02 Rin Kagaku Kogyo Kk Method for producing high-purity aluminum metaphosphate
JP2009067608A (en) * 2007-09-11 2009-04-02 Rin Kagaku Kogyo Kk Method for producing high-purity aluminum metaphosphate
CN103523765A (en) * 2012-07-04 2014-01-22 广东先导稀材股份有限公司 Preparation method of aluminum dihydrogen tripolyphosphate
CN105645369A (en) * 2016-04-08 2016-06-08 山东理工大学 Preparation method of Al(H2PO4)3 crystal powder
CN110054166A (en) * 2019-05-13 2019-07-26 承德莹科精细化工股份有限公司 A kind of preparation method of high-purity optical glass additive ytterbium metaphosphate

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